Sylpheed 3.1 Beta 1

Sylpheed is a simple, lightweight but featureful, and easy-to-use e-mail client.
Sylpheed provides intuitive user-interface. Sylpheed is also designed for keyboard-oriented operation, so Sylpheed can be widely used from beginners to power users.

New features

Full automatic address completion was implemented. Users can also
configure to use the previous behavior (start completion on Tab key).

The debug log output for filtering was added.

Update check can also show alternative version as well as internal
version now.

New plug-in APIs for update check and folder view were added.

A new option '--instance-id <ID>' was added. This allows users to
run multiple instances of Sylpheed.

'Open' menu was added to the attach context menu of the message
composition window. This allows users to open attached files before
sending.

Other improvements

English Sylpheed FAQ was updated.

Plug-ins are also loaded from user plug-in directory now.

Unix: the default web browser command was changed to xdg-open, and
obsolete commands were removed.

Bugfixes

Unix: the crash when using %f on IMAP messages at the action tool
was fixed.

The crash when clicking tray icon menu 'Get from current account'
when no account exist was fixed.

The crash on 64-bit architecture with LDAP was fixed (debian BTS
#463366).

Some GTK+ warnings were removed.

Redundant debug or error messages were removed.

The bug that MIME flags were not set to imported mbox file and
filtered sent messages was fixed.